Properties of the Number 56021

Fifty-Six Thousand Twenty-One

Basics

Value: 56020 → 56021 → 56022

Parity: odd

Prime: No

Previous Prime: 56009

Next Prime: 56039

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 7 × 53 × 151

Divisors: 1, 7, 53, 151, 371, 1057, 8003, 56021

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101101011010101

Octal: 155325

Duodecimal: 28505

Hexadecimal: dad5

Square: 3138352441

Square Root: 236.68755776339407

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of n-bead bracelets (turnover necklaces) with 8 red beads and n-8 black beads. A5514

Define two sequences by A_n = mex{A_i,B_i : 0 <= i < n} for n >= 0, B₀=0, B₁=1 and for n >= 2, B_n = 2B_n-1+(-1)^A_n. Sequence gives B_n. A80241

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 865", based on the 5-celled von Neumann neighborhood. A273701

Numbers k such that 15·10^k + 1 is prime. A295325

Numbers k such that k⁴ == 1 (mod 5²). A56021